We constantly review our high quality product range to ensure that not
only does it meet our customers current needs and offer excellent value
for money but it is also safe to use. Safety could not be more prevalent
in the selection of our PCB chemistry. For some years now we have not
sold Sodium Hydroxide for use as a developer, the 4006 & 4007 developers
do not contain this caustic chemical.
We are also often asked "Is fume extraction required for PCB processing?".
Recently the services of an occupational hygienist from Thomson-MTS Limited
were employed to carry out an analysis of our chemistry whilst it was
being used to process PCBs. Mega tanks containing the following chemistry
were used:
- Developer - 4006V05 (600-010)
- Etchant - Mega Ferric Chloride
- Etchant - Fine Etch Crystals (600-014)
- Resist Strip - PC155 (600-019)
- Tin - PC163/8 Immerse Tin (600-020/1)
The conclusion reached was that providing PCBs are produced in the same method and environment as the test conditions (i.e., using the above chemistry in Mega PCB tanks in a reasonably sized room) then NO LOCAL EXHAUST VENTILATION IS REQUIRED.
A full copy of the report is available, upon request.
For those using other PCB processing chemistry or techniques who would prefer a dedicated fume extraction system a range of canopies, stands, splash backs, fans and ducting are available from Mega. As every building is different it is impossible to specify a system to meet every individual's requirement without a site survey. For those who are unable to arrange their own survey and installation we can arrange an initial survey (chargeable) and the fitting of a Mega extraction system which will be tested and the appropriate certification issued (requirement of law).
Canopies
6mm PVC canopies specifically designed to meet appropriate air flow requirements for local exhaust ventilation. The low level capture vents ensure approximately 80% of the fumes are removed at source, the remainder being caught by the higher level vent. Canopies are available in various widths up to 96". The 36" model being suitable for PB type benchlines and the 48" for Labstations and PL series plating lines.
Prices of other sizes available upon request.
Also available is an optional 595mm deep splash back which can be mounted between the bottom of the canopy and the top of the processing unit. Please ask for further details of frames, dampers ducting etc.
Corrosion Resistant Centrifugal Extraction Fans
A range of fans ideal for use with the above canopies. All are mounted on a rigid bracket and can be fitted in any orientation to alter the angle of discharge. Suitable for temperatures up to 49°C. They can be externally mounted for which protective weather proof cowls are available. Single phase - 240V, 3 phase also available.
